fix: biome formatting and lint fixes in App.tsx and TokenUsagePage.tsx

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/TokenUsagePage.tsx

@@ -1,6 +1,6 @@
 import * as React from "react";
-import { api } from "../api/client";
 import type { TokenUsageRecord } from "../api/client";
+import { api } from "../api/client";
 
 type SortKey =
 	| "timestamp"
@@ -105,7 +105,7 @@ export function TokenUsagePage({ projectPath }: TokenUsagePageProps) {
 				setError(e instanceof Error ? e.message : "Failed to load token usage"),
 			)
 			.finally(() => setLoading(false));
-	}, [projectPath]);
+	}, []);
 
 	function handleSort(key: SortKey) {
 		if (key === sortKey) {
@@ -397,7 +397,11 @@ function SummaryCard({
 	label,
 	value,
 	highlight = false,
-}: { label: string; value: string; highlight?: boolean }) {
+}: {
+	label: string;
+	value: string;
+	highlight?: boolean;
+}) {
 	return (
 		<div
 			style={{